Gas-heater.



GEORGE enormes, or Los enentnsfcemroania GAsQHnArnia.

inet/,eea

Specification of Letters atent.

Patented Nov. 2V?, t.

hppncanonnied november 27, 1916. serial no, 133,578.

To all whom it may concern Beit known thatLGnoRGn CLoT'rs, a citizen ofthe ,United States, yresiding at Los Angeles, in thecounty of Los Angeles,l State of California, haveA invented new and useful improvements inGas-Heaters, of which the following is a specication, i s

VThis invention relates to heaters; and particularly to heaters of the kind designed to be used in a room todirectlyheatthe atmosphere therein h;` and',moreparticularly to that classw'of heaters known as gas heaters, althoughit willbe understoodthat my heater may be designed to use f uelother than gas. Itisfan object of this invention to provide a siinpleheater which will efficiently radiate to the surrounding atmospherea high percentagepof the heat of combustion of the fueli :It is valso an ect to provide aheater which is easily constructed, manufactured, assembled, and one in which the various .partsare easily accessible Itis also an object, in a heater ofthe character described, to provide visibility of the heating iiame, and at the saine time to provide an eliicient heat radiatingr'tructure surrounding the fire boxiniwhich the 'Haine burns; With these, and other objects in view, as will hereinafter appeanfl have provided a heater such as tdescribed in the Ifollowing sip,eciieation,n reference being had to the accompanying `drawings in which, for the purpose dfthis specification, have illustrated a, preferred ,form of heater. A ln thesedrawings` Figure 1 is 4an elevation of the heater, parts being broken away for purp'osesof illustration; Fig. 2 is a eentral vertical-l longitudinal section of the heater; Fig. 3 is a central vertical crossV section of the heater taken as indicatedby line 3-3 on Fig. 2; and Fig. 4 is a horizontal section of theheater taken as indicated by line l--il on Fig. 2; 1 thedrawings the numeral 10 designates a 'suitablegbasa preferably made of iron, in b oxllilie form, with `an inwardly turned iia'nge l1 at its upper side. A iire box 12 is mounted upon this base; the base 10 having air Iir'ilet opening 10?" and the fire-box havair inlet opening 12a, adjacent the lnirnerV 13 therein.` This burner 13 `needs here no particular comment; as any eflicient buriier will suiiice; the burnernpreferably being elongated in form and `preferably embodying two burner tubes such as illustrated. The combustion chamberor iire-box`12 has a vertically extending bailie wall 1i which extends from the rear side of thebottom of the lire boxto a point near the top; so that the heated gases may travel upwardly and over the top of the baffle wall and then downwardlytotheoutlet'l. This outlet 15 connects with the lowermost `convolution 16 of the heat radiating" tube which surrounds the fire box as illustrated. This lowermost convolutionrests upon theflange 11 of the base box 10;- and, from the point of communication with the opening 15, this lowermost convolution extends in opposite directions around the lire box l2 to points at the front of the lire box. The lire box has a front door opening and a door 20 with a transparent panel 21'; the door being hinged at 22 and having fasteningmeans at 23. I provide afrontv plate Ql; which front plate may be decorated in any suitable manner'to give a suitable appearance to the heater; and this front plate has an opening :25 opposite the door opening of the tire box. The convolution 16 proceeds to points at opposite sides of` this opening 25, and behindfront plate `24; and connecting members QG are provided for connecting the ends of the tubes at these points withA communicating boxes 27. The next convolution 30 of the radiating tubealso connects into these boxes, by connecting members26a, The gases which enter the convolution 16 at the point 15, travelto the sides and forwardly around the fire box 12m the boxes 27andthence upwardly `into the next convolution V30.` This convolution 30 is connected at 31 with the next convolution 32; and in this convolution 32 the gases pass around from the point 3l in a complete circuit and thence through the connection33 to the next convolution 34, through which they pass in a complete circuit, until they arrive at the discharge opening 35, whence they pass to any suitable dis charge iiue. 0f course, there may be as many convolutions of the tube as desired; but l ind, in actual practice, that the number of convolutions illustrated is suiiicient to cause eflicient radiation of the heat to the surrounding atmosphere;` thera'diation being sov efficient that the outlet 35 is only warm and not at all hot.

I provide a top 40 for the heater, this top having an opening 41 covered by a register cover 42 of any suitable or usual design. This opening `41, and register cover 42, substantially correspond in size to the space inclosed'within the convolutions of the radiating tube; so as to afford an opening for the free upward movement of the heated air which rises in the space within the radiating tube and surrounding the fire box l2.

It will be noted that the radiating tube is spaced from and around the fire box 12, and that the superimposed convolutions are spaced from each other, so as to allow free access of the surrounding atmosphere to the space between the convolutions and the fire box. The heated fire box heats the Surrounding air by conduction; this air moves upwardly and in doing so draws cold air in between the convolutions ofthe tube, drawing the cold air over the hot tubes. The air is then first heated byV conduction from the tubes and then further heated by conduction from the hot fire box, acquiring a maximum temperature before leavingI the heater. The base of the heater is preferably provided only with sufficientholes to allowV entry of enough air for eombustionpurposes in the fire box; or at least the holes in the base are so restricted thatthe upward air current around the fire box draws air horizontally between the con- I volutions rather than merely drawing it up from the bottom of the heater. In this manner the air is moved over practically the whole surface of the tube, causing eilicient conduction from the tube to the moving air. This air is drawn in horizontally from all sides; from the surrounding atmosphere, by the action of the draft forced by the upward air motion around the fire box, and flows equally through all the spaces between the tube convolutions. The convolutions are held in their spaced relation,` and the different parts of the heater are held together in the manner now described. Vertical rods 45 extend through the structure, being secured to the base 10 below, and being secured to brackets 46 above, which brackets are secured to the Y top40. These rods 45 extend through each of the convolutions of the radiating tube; and spacing washers or the like 46 are provided between the adjacent convolutions so as to hold the convolutions in their proper spaced relation. It will be seen that these rods afford means for easy' assembly of the different parts of the heater, and that they hold .the parts rigidly in form and place.

V From the foregoing'description it will be seen that the radiating tubes are freely exposed to the' surrounding atmosphere; that the surrounding atmosphere is freely admitted to the space between the tubes and the fire box, and that free upward circulation of the heated air is allowed. This results in efficient conduction and radiation of the heat directly to the circulating atmosphere. And, in this connection, I call attention to a distinctive feature .of my ner/,93e

heater; it delivers heat directly to the open air rather than to an inclosed body of air, as is the .case in a hot air furnace.- The surrounding cold atmosphere is drawn into close contact with the heatedV tube, drawn over and between the convolutions, and is first heated there. Then it passes to the interior space directly around the fire box and is there further heated. The whole action is that of a lnatural movement or forced draft of air ycaused by theupward movement of the heated air. It will be noted that the base l0, vas hereinbefore stated, is so situated as to prevent the entry of air from below` directly Yupwar'dly into the space between the fire box and theconvolutions of the radiating tube. This forces the air to beidrawnin horizontally; over and between the convolutions of thetube,

vice with some particularity; .but I do not thereby limit my invention to'fthe specific details described, as these details `may be modified and variedywithin the scope of theclaims. a

`Having described a preferred, form of my invention, I claim; Y Y Y 1. An open air heater, embodying an in ner fire box havingv a vertical ybaflie over the top of which the heated gases Amay flow, a burner in the lower part of the fire box, the fire box having air n.inlet openings adjacent the burner and an outletnnear its bottoml behind the baffle, a heatradiating tube coiled in horizontal convolutions aroundthe fire box, the lower end yof the tube communicating with the fire box outlet; the ,convolutions i of the tube being freely` exposed to the surrounding atmosphere, vand Ybeing lvertically spaced from each other and horizontally spaced from and around the fire box so `as to allow vfree natural circulation of. air between and around the tubes and between them YandV the fire box, said fire boxhaving a dooropening `and door, and an exterior front plate outside the tube convolutions havingran opening therethrough opposite the fire box door, the lowermostf tube convolution extending from the backaround opposite sides of the fire box to points Vat opposite` sides ofthe front plate 1opening, communicating means at said points between the lowerniost convolution and the next oneabove,abase upon which the fire boxand the tube convolutions are mounted,4 vertical securing rods secured tothebase and top and passing` through the severalv tube convolutions, and spacers on the rods to space the several convolutons apart.

2. In an open air heater, an inner lire box with a door opening at one side, a radiating tube coiled about the fire boX leaving an open space in front of the door opening, and lateral connections between adjacent convolutions of the tube at the sides of said open space.

3. In an open air heater, an inner re box With a door opening` at one side, a radiating tube coiled about the fire boX in horizontal convolutions, those convolutions which are opposite the door-opening terminating at opposite Sides of the opening, and lateral vertical connections between the ends of adjacent convolutions at the opposite sides of the door opening.

In Witness that I claim the foregoing I have hereunto subscribed my name this 18th day of November 1916.

GEORGE CLOT'IS.

Witnesses:

ELLWooD H. BARKELEW, VIRGINIA I. BERINGER.

Copies of this patent may he obtained for ve cents each, by addressing the Commissioner of @atenta Washington, 1D. G. 

